TpJna: tp_proc_create/setup/set_*/exec_*/get_clt/destroy + tp_proc_convert_selftest.
StageProc: validates the persistent convert path == Stage-2 CLT golden + no_kernels smoke test.
PASS on 5060 Ti. This is the production-facing surface GpuQuadJna (integration step 2) delegates to.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>